If you don't opt-in to privacy shredding then you will be locked out of being able to use facebook, whatsapp, and other "network effect" things that you more or less don't have a choice about without cutting out communication with large parts of your social network, so this is not really a "free choice" at all.

Right now those companies don't have the leverage to lock out Apple users. This immediately gives them that leverage and they will use it, just like they already have tried (and gotten their hands slapped for).

App store review is the only thing standing between you and Facebook demanding full permissions for everything, and allowing third-party app stores or sideloading is a mortal blow to app store review.

I understand that you don't personally care but the Apple customer base does, a large number of them specifically choose that because Apple is using their leverage in favor of the customer here. You can get the experience you desire on the dominant smartphone platform (with 85% of the global smartphone marketshare), just leave us the freedom to choose this experience as well. You're arguing that we should be explicitly denied this because it's not convenient for Facebook.

We don't need to sacrifice general purpose computing and user freedom on any platform so you can protect your false impression that your privacy is protected while actually giving it away cheap.

I believe Zuckerberg said it wwll years back when he called people who trusted him suckers.